| 摘要 |
<p>The switch is of the type, know per se, in which an inductioncoil is driven by an oscillator. The oscillator is monitored by a level detector whose sensitivity is set by a resistance (R10) in the form of a resistive layer on a substrate (18) (Figure 4). The switch is calibrated and adjusted automatically by abrading away part of the resistive layer (Figure 5).</p> |
